you need diatonic harmony:

C Major for this example - the notes in a C Major scale are C D E F G A B and back to C. The chords in the key of C major are:

C Dm Em F G Am Bdim - the progression is always the same, even though the notes will change if you're in another key.

With that in mind, all the chords you list are in the Key of C major, so you could play any mode of C major throughout and it would work. However, as the progression starts with Am, I'd probably be thinking about playing A Aeolian (natural minor)...

I Hope that helps...